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Kale

Brassica oleracea var. sabellica

Kale is a hardy, leafy green vegetable belonging to the cabbage family, known for its highly nutritious leaves. It is available in various forms, including curly, Lacinato, and Red Russian.

Kale (Brassica oleracea var. sabellica)
Scientific name
Brassica oleracea var. sabellica
Family
Brassicaceae
Also known as
Leaf Cabbage
Category
Vegetables, Fruits & Herbs
Care difficulty
Easy
Pet safety
Non-toxic to cats and dogs

How to care for kale

  • Light: Requires at least 6 hours of full sun daily for best growth and flavor. It can tolerate partial shade, which may extend the harvest in hot climates.
  • Water: Keep soil consistently moist, especially during dry periods, to ensure tender leaves. Avoid allowing the soil to dry out completely.
  • Soil: Prefers rich, well-draining soil with a pH between 6.0 and 7.5. Incorporate plenty of organic matter before planting.
  • Temperature: Thrives in cool weather, ideally between 60-70°F (15-21°C). It can tolerate light frosts, which often improve its flavor.
  • Humidity: Average humidity is generally sufficient. Ensure good air circulation to prevent fungal issues.
  • Fertilizer: Benefits from nitrogen-rich fertilizer to support lush leaf growth. Apply a balanced liquid feed every 3-4 weeks or top-dress with compost.
  • Propagation: Easily grown from seed, either direct-sown in the garden or started indoors 4-6 weeks before the last frost. Plant seeds 1/2 inch deep.

Is kale toxic to pets?

Pet-safe. Generally considered non-toxic to cats, dogs, and humans in moderate amounts. High oxalate content may be a concern for pets with kidney issues if consumed in very large quantities regularly. See our guide to toxic plants for cats and dogs.

Common problems

  • Aphids: Spray with a strong stream of water or apply insecticidal soap to the undersides of leaves.
  • Cabbage worms: Handpick caterpillars, use row covers to prevent moths, or apply Bacillus thuringiensis (Bt) spray.

Did you know?

Kale is one of the most nutrient-dense foods on the planet, packed with vitamins A, K, C, and various minerals.

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